The unique low-viscosity hybrid ink in Pilot's Acroball pen has the vibrancy of gel ink and the quick-drying and water-resistant properties of conventional ballpoint ink. The result is vivid, long-lasting lines whenever you write and draw. A blend of ink and lubricants ensures that the ball at the pen tip rotates smoothly, creating a gliding, no-skip writing experience. The rubber grip also maximizes writing comfort, featuring a tire tread-like texture and curved contours to give you a non-slip hold.